Lead .NET Engineer

We are looking for a Lead .NET Engineer to own the backend migration of a mature Windows desktop application for FDIC Call Report preparation to a cloud-native, containerized architecture on Kubernetes.

This is a greenfield-on-legacy engagement: decomposing a monolithic .NET Framework 4.8 / VB.NET codebase into five independently deployable ASP.NET Core services, while preserving every regulatory workflow FDIC-supervised banks depend on at filing time.

Responsibilities

Lead the backend migration effort from a legacy monolithic desktop application to a cloud-native, containerized architecture

Oversee the decomposition of the existing codebase into independently deployable backend services

Drive architectural decisions and shape the technical direction across the migration workstreams

Guide and mentor a small team of engineers, ensuring alignment on standards, patterns, and delivery goals

Collaborate with stakeholders to translate regulatory workflow requirements into scalable technical solutions

Design and implement backend services that support multi-tenant use cases with strict data isolation

Take an active part in code reviews and enforce high standards of code quality and maintainability

Identify and mitigate technical risks throughout the migration lifecycle

Coordinate deployment activities and ensure services operate reliably in containerised environments

Contribute to continuous improvement of engineering practices, tools, and delivery workflows

Requirements

At least 5 years of professional relevant experience in backend .NET engineering, with demonstrable experience leading a team of 2 to 4 engineers

Practical experience with legacy migration efforts moving applications to a new technology stack

Background designing and delivering multi-tenant SaaS backends with per-tenant data isolation

Hands-on delivery of microservices running on Kubernetes

Senior-level proficiency in C# and ASP.NET Core (Current)

Applied experience with Entity Framework Core, including global query filters, optimistic concurrency, and migration management

Working knowledge of PostgreSQL covering schema design, Row-Level Security, and multi-tenant patterns

Practical experience with OAuth 2.0 and OIDC server-side flows using Microsoft.Identity.Web, along with JWT issuance and validation

Hands-on experience with Docker and Kubernetes, including ownership of service manifests rather than only consuming them

Applied background with xUnit and Testcontainers for authoring integration tests against real databases

Strong VB.NET reading comprehension, with the ability to fluently trace and reason about legacy VB.NET code without needing to write it

Confident English communication at B2 level or higher, both written and spoken

Nice to have

Experience configuring Auth0 or equivalent SAML/OIDC brokers for identity and access management

Familiarity with AI Assistants for supporting development activities and productivity

Working knowledge of Azure Pipelines for CI/CD automation

Awareness of Google Cloud Platform for cloud infrastructure and service operations

Practical exposure to Helm for managing Kubernetes application deployments

Hands-on experience designing and building REST APIs

Familiarity with SAML for federated authentication scenarios

Awareness of XBRL for structured business reporting use cases

Experience with OpenTelemetry SDK instrumentation for observability and tracing

We offer

International projects with top brands

Work with global teams of highly skilled, diverse peers

Healthcare benefits

Employee financial programs

Paid time off and sick leave

Upskilling, reskilling and certification courses

Unlimited access to the LinkedIn Learning library and 22,000+ courses

Global career opportunities

Volunteer and community involvement opportunities

EPAM Employee Groups

Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn